合作学习是小学数学课堂教学中应用比较多的一种学习方式。合作学习中离不开学生的交流,但学生的交流往往是“被交流”——有交流程序无交流实质。“被交流”常常出现这样一些现象:有的学生不知道如何交流;有的学生缺少用语言有序梳理思考和外化表达过程的经验;优生占有绝对话语权,差生只能当听客,对优生的发言似懂非懂,无法参与交流;小组交流知识无层次、不具体或不深入;重复表达较 Cooperative learning is a kind of learning method that is used more frequently in primary mathematics classroom teaching. Cooperative learning is inseparable from the exchange of students, but student exchanges are often “being exchanged ” - there is no exchange of communication procedures essence. Some students often do not know how to communicate with each other. Some students lack the experience of using language to sort out the process of thinking and externalizing expression. Youyou has the absolute right to speak. The poor students can only listen to the audience , The precepts of eugenics do not understand, can not participate in the exchange; group exchange of knowledge no hierarchy, no specific or not in-depth; repeat expression